Circulating means for locomotive-boilers.



Fatented. Sept.

J. NEFP.

GIRGULATING MEANS FOR LOOOMOTIVE BmLERs.

APPLICATION FILED SEPTA? 1913.

J, P. NEPP. UIRCULATING MEANS FOR LOCOMOTIVE BOILERS.

APPLICATION FILED $EPT B 1913.

Patented Sept. 29, 1914.

3 SHEBTSSHEET 3.

255 6? 2. income Specificatiaa of Patent To all whom" it may amwesm.

Be it knownvthat 1,. JOHN P. NEFF zen'ci ihe United Sm'ies, residing a miss Orange, 111 the csunty 0f Essex and Stats of New Jersey, haw invented certain 11 w and useful Impiovemsnts in Cii'cuiaii. Mesns for Locwnoiive-Beiiers,'05 which t following: is a specification.

This invention reiaies genera-iiy :0 ioc0- motive boilers, [and yarticuiariy in View means far iiicreasing tile circuiationof 1381: Within ihe boil-e1, which Wiii ebviousij result in higher @oiier eifiCien-cy, since a greataar amsuzit best- Wiii be absorbed by the mate: due tothe improw' ed circuiatizig rsysiei n wi'iici in ventian- 123:0-

vides is I One of; be ob Urqvide p'asi aiie watsi the batten 4-9 the top and thereby I working (:0? ii tions than can be cbsainsd by on i natural cimuiation :5 L up by zhe heaing the Wail' aisns.

.Ancther sbjes commm' timi s f fmQzi Water of w: 212s :cfse: m spposita and.

A fiirthei' sbg'eci iii-e invantiaii is to r'cvide insieaseci' steaming fziciiities L01" the E) mailer by beating the beiier tubes they will not easily became inactive through V stoppage by ash simila which is 2. fault foumi iii the present design of igcmnaii've' boilers.

ii-F121 these and many wither objects in yievg lch will more readiiy appear as 2mm *3 the invention isbstter. undersmad,

the p 11152 0n5sis in file-novel canstmet-isn,

,combi s,ti0si.. .11 iarrangement of partshere fully descrlbsri, illustrated and i is mo ,ciaizylsdn; 1. I I

it v ii befreadiiy unpieiisiood that sms an:

. vention quite susceptible ta 2, Wide range of stzuctural nio ziificatieiiwitimutdeparting 50 frnm the spirit or scapsbf the ixvenimn,

but a preferred practicai ambsriimeiit ofthfi invention is shown in ,the accsmpaii ing drawings in Winch- Figure l is q 50 that bsiier i,

, commumcation shown. zi -"I l of "she is t1" averse sgiiozmi 4 e boiier shown in Fig, 1 i'eari? ting; the mechanics w'atr circuiat shows frail: eievatiai of i020 ei z a box with the water aircuiating i'isi CidhgB 'iS contempisteii in; the. usual struatien' of 'tiie iocomotivle er vs'iiic isdesign 'ed in the izziwinig's tile numeral 118 b6 thidreo-f is 2; plates? side, which mms s 1 use sheet against 1gnat+ i in its entirety by the xq ting pi-i xii 055 a sppositeiy pitched center and inciu i- J beiow the osiler- 1. is mos'icied at each end and in I I a with the verticaiiy disposed fiarigezi necks 11, he center one ofwhicii is ca miets'ifii s fuii joint cennect-ien 1?" to ihe'ipi 13 0x the bottom of i 1 he casing 1 with the mixing chamber Wm outer flanged necks 11 1 thus 11 3. [is

by suitabi'e oint cs'nneetio i, dispcseci conveysr pipes l-i -the ciownwaidiy c'iirve'ci necks 15 w 10h (10112 inumcate blnqqugii suitsnle 'ciinnectians with the top port-ions of the boiler, and t uses tsbiish communicatista bejcween emis 01' the casing 19 and the upper pcirtlop. of the 21 can mg 0% this inveziiien, rio :111339- I 4 the biisr l and atiahsi 511g riichanicai Water controls the passage of steam to the said turbine 17. The opposite end l of the tubular casing 10 is provided with. a re movable head 20 having a central. socket'2l 5 formed therein for the purpose of receiving and supporting the end 9 of the conveyor screw shaft 9. z

From the foregoing, it will be obvious that a rotation of the conveyor screw 8 by 10 the turbine 17 will cause the water in the mixing compartment 3 to flow down through the center neck 11 and outwardly in opposite directions through the tubular casing 10 to the outer water necks 11 from whence it will 15 be forced'up into the pipes 14, through the necks l5 and'into either side of the top of the boiler. Thus the cool water of the comartment :3 will be fed to the top of the oilergl and intermix with the hot water, so and then be sucked down around the fire tubes 22 thereby absorbing more heat, and then into the open end t of the chamber 3, where it again repeats the operation just described.

Having provided means for creating a circulation of water between the bottom and the top of the boiler a greater boiler etiiciency will result because of the greater opportunity for heat transmission from the fire tubes 22 through which the heated gases pass from the fire box 23 to the smoke box 24, and

thence out of the stack 25 to the atmosphere.

' By referring to Fig. 1 of the drawings, it will be seen that since the compartment 3 is closed at the front end and open at the rear end, and since the mechanical circulator draws water from the compartment,- all water must pass through the opening 4: at the rear of the diaphragm 2 to get into said compartment 3. When this flow is established, the water above the diaphragm will be drawn from the opening 4: to the back of said compartment thus always bringing comparatively hot water from the major part of the boiler and mixing it with fresh water from thetender tank, and the coolest water the bottom of the boiler which obviously results in aiding the increased steamiug facilities of the boiler designed to be accomplished by this invention. Th1 culating condition is also augmented by the -location of the arch tubes-26. These tubes are preferably placed immediately below the opening 4, and as usual are ositioned in the front leg 27 of the boiler. s these tubes 26 become steam generators, due to their location in the locomotive furnace 23, the water supplied thereto must also come from the front, water leg 27, and this in time must be J0 replenished by water which also passes through the opening 4. Accordingly, since two separate and distinct currents, one through the compartment 3;,and the other upwardly through the arch tubes 26, are supplied by water which must come from above the diaphragm 2, it is further obvious that a rapid movement of water will take lace in the vicinity of the lower tubes 22 within the boiler. a

\Vith this circulation system, it is preferred to discharge the feed water into the compartment 3, thus thoroughly mingling the cold water with the hot, whlch is much more to be desired than the present practice which is to discharge the cold feed water in one place within the hot boiler.

It is quite possible to so design this circulator as to occupy a very inconspicuous place within the smoke box 24 of a locomo- 1 tive as is' shown in Figs 4 and 5 of the drawings. Inthe embodiment disclosed in these figures, the structure is identical with that disclosed in Figs. 1 to 3 inclusive except for the minor details and shape of the conveyer tubes 14, and the tubular conveyer casing 10, which are varied to adapt the invention to this particular part of a locomotive boiler, but in so doing, the structural features are not without the scope of the appended claims. The said conveyer tubes 14' are in communication 'at'theirlower ends with the outer necks 11, the same as in Fig. 3, but the said necks are curved to suit the location ofthe device. 'It will furthefbe observed that saidtubes 14 are in communi- 95 cation with the u per part of the boiler 1 at their other ends by. means of a common.- fitting 28 which has the horizontally project ing boiler pipe connection 29. It will also i be noted that the center neck ll'of the tubu- 100 lar casing l0 which is in communication 4 with the compartment 3 is horizontal in this form of the invention instead of vertical as shown in Fig: 3.-

With both types of the device it is prefer 16 able to locate boiler washout lugs 30, in such places that the bottom of the boiler can I readily be "cleaned of mud and such sediment as is usually found in locomotive boilers, after the/same have been in service for 1 some time. r

With a more uniform tom erature of the water within the boiler it w' 'readily be understood that flue leaks will be ve much reduced, the bottom flues of the boi or will 5 perform more of the duties which they 'now do not perform and that the steaming facilities of the boiler will be much im roved.

' Without further description and e aboration it is thought that the many features and advantages of the herein describedwater circulation system will be'readily a arent, to those skilled in the art to who it belongs;

I claim:

1. A water circulating system for locomotive boilers includingm combination with the boiler and firentubes, a separating diaphragm arranged below the fire tubes and extending across the boiler forming a mix- 130 ing compartment open one end and closed at the. other. means for establishing coininuniezition between said compartment and the top of file boiler. and operative means for forcing :ihe water through the latter.

2. A writer cireuhiting system for lOCOIDO- tive boilers including in combination with the boiler having front and rear fine sheets anal longitudinal fire tubes connecting the some, a diaphragm arranged beneath fiillil fire tubes and. extending transversely befiween the lower sides of the boiler and having its front end meeting with the front fine sheet and its rear end irniinating short of the rear fine shoe; to form a mixing conipartnient open at one end, water conveying means in eonnnnniention with the saicl 0on1- pertinentforinei on one side of the diapl'irugm and with the boiler on the otner side of the diaphragm, and power actuated means for forcing the Water from the mixing compartment to the major portionof the boiler.

3. A water circulating system for 10- eoniotive boilers including in combination with the boiler having a mixing compartment formed therein a tubular casin member llilYillg ofi set necks one of Whie is in communication with said compartment, a conveyor screw having oppositely pitched flights and a shaft rotatably mounted in said casing, water carrying pipes communicating at one end with the other necks on the easing member and at the other end with the top or the boiler, and means for operating said conveyor screw.

p In testimony whereof I afiix my signatnre in presence of two witnesses.

JOHN P. NEFF.

Witnesses ADAM LEAKE,

NQE. GEE. 

